Turbine system



' E. W. SWARTWOUT.

' TURBINE SYSTEM.

APPLICATION FILED JUNE 27, 1916.

1,333, 140. Patented Mar. 9,1920.

5391 IM Que map law/14 UNITED STATES PATENT OFFICE.

EVERETT W. SWARTWOUT, OF WHITE PLAINS, NEW YORK.

To all whom it may concern Be it known that I, EvERm'r W. SWART- WOUT, a citizen of the United States, residing at White Plains, county of Westchester, State of New York, have invented certain new anduseful Improvements in Turbine Systems, of which the following is a specification. I

This invention relates to turbine systems.

More particularly, the invention relates to a system comprising two or more turbines of desiredrelative pressure relation, or desired pressure stage relation in combination with a superheater and means for supplying steam for heating, manufactory or other purposes. In accordance with my invention, the high pressure steam is supplied to one or more high pressure steam turbines, or to one or more high pressure stages of compound or mixed pressure stage turbines, then the steam discharged through the exhaust of such high pressure unit is led to a superheater, and the resulting superheated steam conducted to one or more ow pressure turbines, or to one or more low pressure stages of a compound or mixed pressure turbine;

Preferably, the system is provided with means for attaining the balance of'tlie system irrespective of the amount of steam which is withdrawn for heating, manufactory or other purposes.

Other features and objects of my invention will be more fully understood from the following description and the accompanying drawing, which shows diagrammatically a form of my invention.

Referring to the drawing, the high pressure stea is supplied by the boiler 1 to the high pressure line 2 to the high pressure unit 3, representing either a high pressure turbine, or the high pressure stage of a compound or mixed pressure turbine. The exhaust 4 of such high pressure unit may be connected through the piping 5 with the receiver 6, thence through piping 7 with the intake of the superheater 8, thence through the low pressure steam line 9 to the low pres sure unit 10, representing either a low pressure turbine or, the low pressure stage of a compound or mixed pressure turbine. The exhaust 11 of the low pressure unit may be connected through the piping 12 with the condenser 13. In the form of my invention as indicated in the drawings, the superheater 8 is tired jointly with the boiler 1, al

though such superheater may be fired scp- Specification of Letters Patent.

I indicated Patented Mar.9, 1920.

' Application filed June 27. 1916. Serial No. 106,101.

arately from the supplying means of the high pressure steam line. The capacity of the receiver 6 is determined by the relative capacities of the high pressure unit and the low pressure unit.

The means for withdrawing steam for heating, manufactory or other purposes is at 14, by connection in a suitable manner with the exhaust 11 of the low pressure unit, as by connection with the piping 12. Under certain circumstances, particu larly for manufactory purposes, the steam withdrawing means may be connected to the low pressure steam line 9, as is indicated at 15. If desired, the pressure of thesteam supplied through the withdrawing means 15 may be regulated by the pressure valve 32.

Preferably, also, the intake of the superheater 8 is supplied with live steam from the high pressure steam line 2, as by 'means of the cross piping 16, controlled by the pressure valve 17 and the stop valve 18.

In accordance with such formsof my invention, the quantity and pressure of steam supplied to the superheater through the cross piping'16 will balance the steam system irrespective of the amount of steam withdrawn through the piping 14, or the piping 15, or both. The initial pressure and temperature of the steam in the steam line 2 is chosen preferably as the maximum pressure and temperature designed for the high pressure unit 3, and the temperature of the steam supplied to the low pressure unit 10 is chosen preferably as the maximum temperature for the design of the low pressure unit 10.

The flexibility of the system may be enhanced by the provision of the piping 19, connected to the exhaust L of the high pressure unit 3 as by connection with the receiver 6, which piping 19 conducts the steam to the inlet of the low pressure unit 10. In such form of the invention, the steam may be withdrawn through the piping 20 and regulated in pressureand quantity by suitable valves, will be understood from the foregoing. I

The operation of the various forms of my invention will be largely understood from the foregoing supplemented by the follow- 1n The high pressure steam actuates the high pressure turbine unit 3, the exhaust steam of which is delivered to the receiver 6, while the low pressure turbine unit is actuated by the superheated exhausted steam of the high pressure-turbine unit, supplemented by such amount of high pressure steam, regulated to a desired pressure, as will be determined by the circumstancesof use. Upon withdrawing steam either at 14t or at 15, or both, the required amount of steam at the desired pressure for elhciently driving the high pressure and low pressure turbine units will be obtained by means of the cross piping 16, or its equivalent, in combination with the superheater 8. v p

In the event that further supply of steam be desired, the same may be supplied to the system through the piping 31, as by connection with the receiver 6. Such additional supply may be derived from the exhaust of an engine of any type a separate boiler or other suitablesource, as will be understood.

It will also be understood that'the receiver may be omitted, and the piping, or any portion thereof, constructed to provide the desired capacity and other functions of a'receiver, as will be understood.

If desired, the high pressure turbine unit may be out out. by closing the stop valves 21,

22, in which case the stop valve 23 may be partially or entirely closed and the actuation of the low pressure turbine unit 10 effected by opening the stop valve 24 in the piping 19. The valve '25 in piping 9 is a stop valve andis usually controlled similarly to the stop valve 23 in piping 7.

The withdrawing means 20 may be employed alone for heating, manufactory or other auxiliary purposes, or may be used simultaneously with either the withdrawing means 14 or the withdrawing means 15, or

both. The function of balancing effected by the cross piping 16, or its equivalent, operates in a like manner upon the use of the withdrawing means 20. Should it be desired to cut out the low pressure turbine unit, as by shutting of! valves 23, 24, a condenser 30 may be connected to the exhaust of the high pressure unit 3, as by connection at 26, controlled by the valve 27. When a bleeder or other suitable type of turbine constitutes or is part of the high pressure unit 3, then the exhaust 4 of a higher pressure stage maybe exhausted .through the piping 5 into the receiver 6 and a low pressure stage is exhausted through. the outtake 28 into the condenser 30', in which case the valve 27 in piping 26 is closed. The valve 29 in piping 28 is a stop valve.

In any or all of the above described forms of my invention, the high pressure unit 3 and the low pressure unit 10 may be the respective stages of a single turbine.

The high pressure turbine unit may be comprised of a. plurality of individual high pressure turbines, or a plurality of high pressure stages, or compound or mixed pressure turbines, and the same may be connected either in parallel with one another or in'series, i. 2., multiple expansion relation. Smnlarly, the low pressure turbine unit may be comprised of a pluralityof individual low pressure turbines, or a plurality of low pressure stages or compound or mixed pres sure turbines and the'same may be in like manner connected in parallel to one another or in series, 2'. 6., in multiple expansion relation.

- of stage or turbines as otherwise described herein.-

Where-as I have described my invention by reference to specific forms thereof, it will be understood that many changes and modifications may be madelwithin the scope of the appended claims without departing from my invention.

I claim:

1. A system comprisin in combination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, a superheater .connected to the exhaust of said high pressure turbine unit, passage means connecting said supply directly with said superheater, .means for withdrawing steam for auxiliary purposes disposed anterior of said low pressure turbine unit.

2. A. system comprising in combination with a supply of steam, a. high pressure turbine unit, a low pressure turbine unit, a superheater connected to the exhaust of said high pressure turbine unit, passage means connecting said supply directly with said superheater, and means for withdrawing steam for auxiliary purposes, said means being connected posterior of said superheater.

3. A system comprising in combination with a supply of steam, a high pressure turbine unit supplied directly by said steam supply, a superheater connected posterior of the exhaust of said high pressure turbine unit, passage means connecting said supply directly with said superheater, and a low pressure turbine unit connected posterior of the outlet of said superheater.

4. A system comprising in combination with a supply of steam, a high pressure turbine unit supp-lied directly by said steam supply, a superheater disposed posterior of said high pressure turbine unit, passage means connecting said supply directly with said superheater, a low pressure turbine superheater and means folsupplying steam The arrangement of superheater and pipdirectlyfrom said steam supply to the intake of said low pressure turbine unit.

5. A system comprising in combination with a supply ofsteam, a high pressure turbine unit supplied directly'by said Steam heater disposed posterior of said high pressupply, a superheater disposed posterior of the exhaust of said high pressure turbine unit, passage means connecting said supply directly with said superheater, a lowpressure turbine unit disposed posterior of the outlet of said superheater, means for withdrawing steam for auxiliary purposes disposed posterior ot the outlet of said superheater and means for supplying steam directly from said steam supply to said low pressure turbine unit and said steam with drawing means.

6. A system comprising in combination with a supply, of steam, a high pressure unit, a low pressure turbine unit and means for 're-heating the whole or apart at will of the exhaust steam of said high pressure unit prior to entry nto the intake of said; low pressure turbine unit.

-7. A system comprising in combination with a supply of steam, a high pressure turbine unit connected directly with said steam supply, a low pressure turbine unit, a supersure turbine unit and anterior of said low pressure turbine unit and means connecting said supply directly with said superheater.

. 8. A system comprising in combination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, a superheater disposed anterior of said low pressure turbine unit, passage means connecting said supply directly with said superheater and piping for auxiliary purposes connected'to the outtake of said superheater.

9. A system comprising incombination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, a. superheater disposed anterior of said low pressure turbine unit, piping for auxiliary purposes connected to the outtake of said superheater, passage means connectmg said supply directly with said superheater, and

means for controlling the pressure in said piping.

10. A system comprising in combination with a supply of steam, a high pressure unit, a low pressure turbine unit, and means for superheating the whole or a part at will of the exhaust steam of said high pressure unit prior to entry into the intake of said low pressure turbine unit.

11. A system comprising in combination with a supply of steam, a high pressure unit. a low pressure turbine unit. means for superheating av desired proportion of steam supplied directly from said steam supply ad mixed in whole or in part at will of the exhaust steam of said high pressure unit. and means for leading the superheated steam to the intake of said low pressure turbine unit.

12. A system comprising in combination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, means for withdrawing steam forauxiliary purposes, and means for balancing the system irrespective of the amount of withdrawal of steam through said withdrawing means, said balancing means comprising passage means connecting said supply directly with said low pressure turbine unit.

13. A system comprising in combination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, a superheater disposed posterior of said high pressure turbine unit, means for withdrawing steam for auxiliary purposes and means for balancing the system irrespective of the amount of steam withdrawn through said withdrawing means, said balancing means comprising passage means connecting said supply directly with said superheater.

A system comprising in combination with a supply of steam, a high pressure unit. a low pressure turbine unit, asuperheater, piping connecting the intake of said super-- heater with the exhaust of said high pressure unit and said steam supply, and means for withdrawing steam for auxiliary purposes.

15. A system comprising in combination with a supply of steam, a high pressure tur bine unit, a low pressure turbine unit, andmeans for superheating the whole or a part at will of the exhaust steam of said high pressure turbine unit prior to entry into the intake of said low pressure turbine unit, said superheating means comprising passage means connected directly with said supply.

16. A system comprising in combination with a supply of steam, a high pressure turbine unit, a low pressure turbine unit, means" for superheating a desired proportion of steam leading directly from said steam supply admixed in whole or in part at will of the exhaust steam of said high pressure turbine unit, said superheating means comprising a superheater and passage means connecting said supply directly with said superheater, and means for leading said superheated steam to the intake of said low pressure turbine unit.

17. A system comprising in combination with a supply of steam, a high pressure unit.

a low pressure turbine unit, means for re- EVERETT .W. sWAR wo r, 

